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Legend (Web/Hazard_Pub)

Dams (1)
ACE Levees (2)
Army Corps of Engineers Army Corps of Engineers
Coastal Vulnerability (3)
Low Low
Moderate Moderate
High High
Very High Very High
Sea Level Rise 1.0 meter (4)
Existing Area of Inundation (5)
Dam Failure Inundation (6)
Tsunami Warning Signs (8)
Tsunami Evacuation Area (RCTWG 2009) (9)
Tsunami Hazard Area (CGS 2021) (10)
DWR Awareness Floodplain (12)
Awareness Floodplain Awareness Floodplain
FEMA Flood Zones (6/21/2017) (13)
100 Year Flood Zone (A, AE, AO, VE) 100 Year Flood Zone (A, AE, AO, VE)
500 Year Flood Zone (Shaded X) 500 Year Flood Zone (Shaded X)
Floodway Floodway
LOMAs_and_LOMRs (14)
Property Property
Structure Structure
FEMA Flood Zones 2015 Changes (15)
ADD ADD
NO CHANGE NO CHANGE
SUBTRACT SUBTRACT
FEMA Flood Zones 2016 Changes (16)
ADD ADD
NO CHANGE NO CHANGE
CHANGE ZONE DESIGNATION CHANGE ZONE DESIGNATION
SUBTRACT SUBTRACT
Area of Potential Liquefaction (18)
Seismic Safety (19)
3 High Instability 3 High Instability
2 Moderate Instability 2 Moderate Instability
1 Low Instability 1 Low Instability
0 Relatively Stable 0 Relatively Stable
Historic Landslides (20)
Slope LiDAR - Elk/Freshwater (21)
15-30% 15-30%
30 - 50% 30 - 50%
+50% +50%
Slope USGS (22)
15-30% 15-30%
30 - 50% 30 - 50%
+50% +50%
Slope less than 15% (23)
<15% <15%
Topographic Contours 40ft (24)
Minor Interval Minor Interval
Major Interval Major Interval
Snow Load (lbs/sqft) (25)
0 0
5 5
6 - 8 6 - 8
9 - 11 9 - 11
12 - 14 12 - 14
20 - 22 20 - 22
23 - 25 23 - 25
29 - 30.5 29 - 30.5
32 - 33.5 32 - 33.5
35 - 36.5 35 - 36.5
38 - 39.5 38 - 39.5
41 - 42.5 41 - 42.5
44 - 45.5 44 - 45.5
47 - 48.5 47 - 48.5
50 - 51.5 50 - 51.5
53 - 54.5 53 - 54.5
56 - 57.5 56 - 57.5
59 - 60.5 59 - 60.5
62 - 63.5 62 - 63.5
65 - 66.5 65 - 66.5
68 - 69.5 68 - 69.5
71 - 72.5 71 - 72.5
74 - 75.5 74 - 75.5
77 - 78.5 77 - 78.5
80 - 81.5 80 - 81.5
83 - 84.5 83 - 84.5
86 - 87.5 86 - 87.5
89 - 90.5 89 - 90.5
92 - 93.5 92 - 93.5
95 - 99.5 95 - 99.5
Earthquake Faults (27)
Alquist Priolo Fault Alquist Priolo Fault
Historic Quaternary Faults Historic Quaternary Faults
Earthquake Fault Hazard Zones (28)
Alquist Priolo Zone Alquist Priolo Zone
NEHRP Soils - HAZUS (29)
B B
BC BC
C C
CD CD
D D
Cal Fire SRA (31)
SRA SRA
LRA LRA
FRA FRA
Fire Response (32)
District District
Dist Response Area Dist Response Area
Non-Dist Response Area Non-Dist Response Area
Out of District Response Out of District Response
Proposed Annexation Area Proposed Annexation Area
<all other values> <all other values>
Fire Hazard Severity (33)
Very High Very High
High High
Moderate Moderate
Firewise Communities (34)
Projects / Treated Projects (36)
Proposed Project Proposed Project
Treated Project Treated Project
Value / Asset (37)
Value/Asset Value/Asset
Safety Resource (Protection) (38)
Safety Resource (Protection) Safety Resource (Protection)
Risk/Hazard (39)
Risk/Hazard Risk/Hazard
Years 1900 to 1919 (41)
1900 to 1919 1900 to 1919
Years 1920 to 1939 (42)
1920 to 1939 1920 to 1939
Years 1940 to 1959 (43)
1940 to 1959 1940 to 1959
Years 1960 to 1979 (44)
1960 to 1979 1960 to 1979
Years 1980 to 1999 (45)
1980 to 1999 1980 to 1999
Years 2000 to 2019 (46)
2000 to 2019 2000 to 2019
Years 2020 to 2022 (47)
2020 to 2023 2020 to 2023
No Recorded Year (48)
No Recorded Year No Recorded Year
Total Fire History (49)
2020 to 2023 2020 to 2023
2000 to 2019 2000 to 2019
1980 to 1999 1980 to 1999
1960 to 1979 1960 to 1979
1940 to 1959 1940 to 1959
1920 to 1939 1920 to 1939
1900 to 1919 1900 to 1919
No Recorded Year No Recorded Year
Airport Compatibility Zones (2021) (51)
Primary Surface Primary Surface
Safety Zone 1 Safety Zone 1
Safety Zone 2 Safety Zone 2
Safety Zone 3 Safety Zone 3
Safety Zone 3* Safety Zone 3*
Safety Zone 4 Safety Zone 4
Safety Zone 5 Safety Zone 5
Safety Zone 6 Safety Zone 6
A A
B1 B1
C C
D D
Airport Noise Contours (2021) (52)
50 CNEL 50 CNEL
55 CNEL 55 CNEL
60 CNEL 60 CNEL
65 CNEL 65 CNEL
70 CNEL 70 CNEL
75 CNEL 75 CNEL
80 CNEL 80 CNEL
Airport Influence Area (2021) (53)
Review Area 1 Review Area 1
Review Area 2 Review Area 2
Airport Overflight Notification (2021) (54)
Airport Compatibility Zones (1993) (55)
A A
B B
B1 B1
B2 B2
B3 B3
C C
C* C*
C1 C1
C1* C1*
D D
Arcata Airport Noise Contours (56)
60CNEL 60CNEL
65CNEL 65CNEL
Existing Airport Noise Contours (57)
55CNEL 55CNEL
60CNEL 60CNEL
65CNEL 65CNEL
Future Airport Noise Contours (58)
55CNEL 55CNEL
60CNEL 60CNEL
65CNEL 65CNEL
Military Training Routes (59)
Airport Protected Airspace (CC 333/FAR77) (60)
Horizontal Horizontal
Conical Conical
Primary Primary
Approach Approach
Approach Approach
Transitional Transitional
Transitional Transitional
Airport Reference Points (61)
(62)